Flexible drinking straw



FIG. 1 is a front perspective view of a flexible drinking straw shown in accordance with my new design;

FIG. 2 is a front elevation view of the flexible drinking straw shown in FIG. 1;

FIG. 3 is a rear elevation view of the flexible drinking straw shown in FIG. 1;

FIG. 4 is a left side elevation view of the flexible drinking straw shown in FIG. 1;

FIG. 5 is a right side elevation view of the flexible drinking straw shown in FIG. 1;

FIG. 6 is a top plan view of the combined flexible drinking straw shown in FIG. 1; and,

FIG. 7 is a bottom plan view of the combined flexible drinking straw shown in FIG. 1.

The features shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a flexible drinking straw, as shown and described. 